《电子与通信技术专业英语》UnitⅡ-8

Chinese Translation of Texts
The signal also travels to the trigger system to start or trigger a "horizontal sweep". Horizontal sweep is a term referring to the action of the horizontal system causing the glowing dot to move across the screen. Triggering the horizontal system causes the horizontal time base to move the glowing dot across the screen from left to right within a specific time interval.
Chinese Translation of Texts
信号直接进入阴极射线管（CRT）的垂直偏转板。加在这个偏转板上的电压使 光点运动。（电子束撞击CRT内的荧光屏上产生光点）。正电压使光点向上运动， 而负电压使光点向下运动。衰减器减小显示的信号电压或放大器增大显示的信号电 压，取决于你如何调节垂直偏转旋钮（volts/div 控制旋钮）。
v. 故障探测 ['mɔnitə] n. & v. 显示器，监视器；监视，监听 [ə'tenjueitə] n. 衰减器 ['gləuiŋ] adj. 发光的
New Words
phosphor trigger accommodate Incoming
['fFra Baidu biblioteksfə]
n. 荧光粉
['trigə(r)] n. 触发器
Chinese Translation of Texts
还可以调节聚焦和亮度控制旋钮，以保证显示的波形尖锐和可以看见。图8-3为 示波器的面板图。
Notes
1
It is widely used in design work, troubleshooting and signa1 monitoring, manufacturing and production-line testing, and many other applications where the observation of an electrical waveform is desired.
[ə'kɔmədeit] v. 容纳
['inkʌmiŋ] adj. 接踵而来的
Phrases and Expressions
production-line general-purpose special-purpose cathode ray tube vertical system
流水线 通用的 专用的 阴极射线管 垂直系统
示波器包括从通用示波器到专用示波器的多种类型。 “range from”意为“从...到...变动”或“从...
到...范围” 例如： The children's ages range from 8 to 15. 这些孩子们的年龄在8岁到15岁之间。
Notes
3
The general purpose oscilloscope is suitable for any of the usual applications in servicing communications, scientific, or industrial work where the frequency of the signal to be observed does not greatly exceed 500 kHz.
➢ The time base. Use the sec/div control to set the amount of time per division represented horizontally across the screen.
➢ The triggering of the oscilloscope. Use the trigger level to stabilize a repeating signal.
Chinese Translation of Texts
稳定重复显示的波形需要触发系统。它保证扫描在同一点开始重复显示波形， 使波形如图8-2（b）所示清晰地显示。
Chinese Translation of Texts
In conclusion, to use an analog oscilloscope, you need to adjust three basic settings to accommodate an incoming signal.
Chinese Translation of Texts
第 8 课 示波器
示波器是最重要的电子测量仪器之一。它被广泛地用于电子设计、故障探测、 信号监测、生产制造、流水线检测及许多需要观察电子信号波形的应用场合。
Chinese Translation of Texts
Oscilloscopes range from the basic, or general-purpose types, to the specialpurpose types .The general purpose oscilloscope is suitable for any of the usual applications in servicing communications, scientific, or industrial work where the frequency of the signal to be observed does not greatly exceed 500 kHz.
Lesson 8 The Oscilloscope
One of the most important electronic test and measuring instruments is the oscilloscope. It is widely used in design work, trouble-shooting and signal monitoring, manufacturing and production-line testing, and many other applications where the observation of an electrical waveform is desired.
它被广泛地用于电子设计、故障探测、信号 监测、生产制造、流水线检测及许多需要观察电 子信号波形的应用场合。
“where”此处不是指地点，而是指“领 域”或“应用场合”。
Notes
2
Oscilloscopes range from the basic, or general-purpose types, to the special-purpose type.
Chinese Translation of Texts
Also, adjusting the focus and intensity controls enables you to create a sharp, visible display. Fig 8-3 is diagram of oscilloscope’s panel.
Chinese Translation of Texts
总之，使用模拟示波器时，为了完全显示连续出现的信号波形，需要调节三个 基本按键：
➢ 衰减或增大信号：使用“volts/div”控制键，以便在信号还未加到垂直偏转板 之前调节信号的振幅。
➢ 时基：使用“sec/div”控制键，设置屏幕水平方向每格所代表的时间长短。 ➢ 示波器的触发：使用“触发电平”控制键稳定重复显示的信号。
Chinese Translation of Texts
示波器的类型包括通用示波器和专用示波器。通用示波器适用于通信、科学研 究、工业生产等各个领域，用来观察频率不超过500kHz以上的电子信号。
Chinese Translation of Texts
Fig. 8-1 is a simple block diagram that shows how an analog oscilloscope displays a measured signal. When you connect an oscilloscope probe to a circuit, the voltage signal travels through the probe to the vertical system of the oscilloscope.
电子与通信技术专业英语
English on Electronic and Telecommunication Technology
Unit Ⅱ
02
Unit Ⅱ
Electronic Instrument and Products
Lesson 8
The Oscilloscope
New Words
trouble-shoot monitor attenuator glowing
➢ The attenuation or amplification of the signal. Use the volts/div control to adjust the amplitude of the signal before it is applied to the vertical deflection plates.
Chinese Translation of Texts
图8-1是一个简单的方框图，表示了模拟示波器是如何显示被测信号的。当你把 示波器探头连上电路，电压信号则通过探头进入示波器的垂直系统。
Chinese Translation of Texts
The signal travels directly to the vertical deflection plates of the cathode ray tube (CRT). Voltage applied to these deflection plates causes a glowing dot to move. (An electron beam hitting phosphor inside the CRT creates the glowing dot.) A positive voltage causes the dot to move up while a negative voltage causes the dot to move down. Depending on how you set the vertical scale (volts/div control), an attenuator reduces the signal voltage or an amplifier increases the signal voltage.
Phrases and Expressions
vertical deflection plates horizontal system horizontal sweep ramp time base signal
垂直偏转板 水平系统 水平扫描 锯齿波时基信号
Chinese Translation of Texts
Chinese Translation of Texts
信号还进入触发系统开始或触发“水平扫描”。水平扫描是指水平系统使光点 沿水平方向扫过屏幕。对水平系统的触发使水平时基电路在专门的时间间隔内让光 点从左至右扫过屏幕。
Chinese Translation of Texts
The trigger is necessary to stabilize a repeating signal. It ensures that the sweep begins at the same point of a repeating signal, resulting in a clear picture as shown in Figure 8-2（b）.